- Written by Phillip Jie
- Posted on December 19, 2019
- Updated on February 5, 2022
- 14442 Views
This article describes the support for specifying User Defined Fields(UDF) in Port ACLs including IPv4, IPv6, and
- Written by Haotian Zhang
- Posted on June 4, 2020
- Updated on May 25, 2026
- 14340 Views
This article describes the support for Filtered Mirroring using security ACL. The user can selectively mirror packets based on the statement in the configured IPv4, IPv6 or MAC ACL.
- Written by Ayush
- Posted on September 5, 2025
- Updated on September 5, 2025
- 1859 Views
User Defined Fields (UDFs) are access-list (ACL) filters that consist of an offset into a packet and a pattern to match at the given offset. It can be used to match non-standard fields in a packet that don’t have existing well-defined filter criteria. An example of a non-standard field is bytes at an arbitrary offset within a UDP payload.